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參數資料
| 型號： | MAX5205AEUB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | Differential Bus Transceiver 8-SOIC -40 to 85 |
| 中文描述： | SERIAL INPUT LOADING, 25 us SETTLING TIME, 16-BIT DAC, PDSO10 |
| 封裝： | MICRO MAX PACKAGE-10 |
| 文件頁數： | 9/13頁 |
| 文件大?。?/td> | 282K |
| 代理商： | MAX5205AEUB |
M
Low-Cost, Voltage-Output, 16-Bit DACs in μMAX
_______________________________________________________________________________________
9
three digital inputs:
CS
, DIN, and SCLK (Figure 2). The
active-low chip-select input (
CS
) enables the serial
data loading at the data input (DIN). Pull
CS
low and
clock in each bit of the 16-bit digital word on the rising
edge of the serial clock (SCLK). Two eight-bit bytes
can be used, and do not require any additional time
between them. Pulling
CS
high after loading the 16-bit
word transfers that code into the DAC register and then
updates the output. If
CS
is not kept low during the
entire loading of the 16-bit word, data will be corrupted.
In this case, a new 16-bit word must be loaded.
LDAC
must be kept low at all times for the above instructions.
An alternate method of interfacing and updating the
MAX5204–MAX5207 can be done with a fourth digital
input, the active-low load DAC (
LDAC
).
LDAC
allows
the output to update asynchronously after
CS
goes
high. It is useful when updating multiple MAX5204–
MAX5207s synchronously when sharing a single
LDAC
and
CS
line.
LDAC
must be kept high at all times dur-
ing the data loading sequence and must only be
asserted when
CS
is high. Asserting
LDAC
when
CS
is
low can cause corrupted data. To operate the
MAX5204–MAX5207 using
LDAC
, pull
LDAC
high, pull
CS
low, load the 16-bit word as described in the previ-
ous paragraph, and pull
CS
high again. Following these
commands, the DAC output only updates when
LDAC
is asserted low (Figure 3).
Shutdown Mode
The low-power shutdown mode reduces supply current
to typically 1μA and a maximum of 10μA. Shutdown
mode is not activated through command words, as is
common among D/A converters. These devices require
careful manipulation of
CS
and SCLK (Figure 4).
Shutting Down
To shut down the MAX5204–MAX5207, change the
state of SCLK (either a high to low or low to high transi-
tion can be used) and pulse two falling
CS
edges. In
order to keep the device in shutdown mode, SCLK
must
not change state. SCLK must remain in the state
it is in after the two
CS
pulses.
Waking Up
There are two methods to wake up the MAX5204–
MAX5207. Pulse one falling
CS
edge or transition SCLK.
It takes 50μs typically from the
CS
falling edge or SCLK
transition for the DAC to return to normal operation.
Power-On Reset
The MAX5204–MAX5207 have a power-on reset circuit
to set the DAC’s output to a known state when V
DD
is
first applied. The MAX5204/MAX5206 reset to midscale
(code 8000 hex) upon power-up. The MAX5205/
MAX5207 reset to zero-scale (code 0000 hex) upon
power-up. This ensures that unwanted output voltages
do not occur immediately following a system power-up,
such as a loss of power. It is required to apply V
DD
first
before any other input (DIN, SCLK,
CLR
,
LDAC
,
CS
,
and REF).
t
CL
t
CH
t
CSS
D14
D15
t
DS
t
DH
D0
t
CSH
t
CS1
t
CS0
SCLK
CS
DIN
t
CP
t
CSWH
NOTE:
LDAC IS LOGIC LOW.
Figure 2. 3-Wire Interface Timing Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| MAX5205BEUB | Differential Bus Transceiver 8-SOIC -40 to 85 |
| MAX5206 | Differential Bus Transceiver 8-SOIC -40 to 85 |
| MAX5206BEUB | Differential Bus Transceiver 8-SOIC -40 to 85 |
| MAX5207 | Low-Cost, Voltage-Output, 16-Bit DACs in UMAX |
| MAX5207ACUB | Differential Driver And Receiver Pair 14-SOIC -40 to 85 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5205AEUB+ | 功能描述:數模轉換器- DAC 16Bit DAC w/Int Reference RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5205AEUB+T | 功能描述:數模轉換器- DAC 16Bit DAC w/Int Reference RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5205AEUB-T | 功能描述:數模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5205BEUB | 功能描述:數模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MAX5205BEUB+ | 功能描述:數模轉換器- DAC 16Bit DAC w/Int Reference RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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